Administeatob of lewis



(No Model.) L. WILKINSON, Deod.

F. M; STEELE,'AdminiStrat0r. MACHINE FOR- TAPPING NUTS.

No. 378,468. Patented Feb. 28; 1888.

UNITED PATENT titties FREDERICK M. STEELE, OF CHICAGO, ILLINOIS,ADMINISTRATOR OF LEIVIS IVILKINSON, DECEASED.

MACHHNE FOR TAPPENG NUTS.

SPECIFICATION forming part of Letters Patent No. 378,468, dated February28,1888.

Application filed April 23, 1887.

To all whom it may concern.-

Be it known that LEwIs WILKINSON, late of Chicago, State of Illinois,deceased, of whose estate I, FREDERICK M. STEELE, a citizen of theUnited States, residing at Chicago, in the county of Cook and State ofIllinois, am administrator, has invented certain new and usefulImprovements in Machines for Tapping Nuts, of which the following is aspecification, to wit:

This invention relates to an improvement in machines for tapping nuts;and it consists in certain peculiarities of the construction andoperation of the same, substantially as will be hereinafter more fullyset forth and claimed.

In order to enable others skilled in the art to which the inventionappertains to make and use the same, its construction and operation willnow be described, referring to the accompanying drawings, in which,

Figure 1 is a perspective view of the machine. Fig. 2 is alongitudinalsection of the same, and Fig. 3 across-section of the tapping slide andholder.

A represents a box or receptacle in which the tapping mechanism isplaced and immersed in oil. This box is supported upon suitable legs orstandards, and through one end is passed the driving-shaft B through asuitable stuffing-box, upon the outer end of which shaft is thedriving-pulley b, and upon the inner end a clutch, B, in which issecured the tap B as shown in Fig. 1. In the opposite end of the oilreceptacle A is the nutguide, which consists of a metal casting, C,having a longitudinal opening, 0, through it, which is square,hexagonal, or of any shape to properly receive and hold the nut-blank,which is slipped into it through a slot, 0, in one side of the guide, asshown. In the guide 0 is placed a slide, 0, moving back and forth in thelongitudinal opening 0, and having a small knob or handle, 0 working ina slot in the side of the guide, by which it is moved. The front end ofthe slide 0 is bored out, as at a, to receive the end of the tap afterit has passed through the nut.

In operation the receptacle A is filled with oil till the tap and all ornearly all of the Serial No. 235,911. (No model.)

blank-guide are covered. The end of the tap extends within the guide,and when a blank is inserted through the slot 0 and pushed up to the tapby the slide 0 the thread must be. out true, because the blank is heldfirmly in a groove or way exactly fitting it and in proper alignmentwith the tap. Only one blank can be inserted at one time, and thereforeno carelessness upon the part of the workman can injure the tap, while,should more be fed in one at a time without removing any, they are allheld true and cannot twist or break the tap. All the working parts beingimmersed in oil, they are always properly lubricated without any wasteof oil, and the operation is thus more rapidly and cheaply performed..65

The blank holder is made removable and formed with a square or angularshank,d, which fits into a similar-shaped socket, d, in the bottom ofthe oil-box. The guide is thus readily removed and another substitutedto hold a larger or smaller sized blank, and when in place is firmlyheld in a true line with the tap.

Having thus fully described the invention, what is claimed as new, anddesired to be secured by Letters Patent, is'- 7 5 1. In a machine fortapping nuts, the combination, with a revolving tap, of a stationaryguide provided with a slot or passage of the size and shape of the nut,and a slide therein to press the blank to the tap, substantially as andfor the purpose set forth.

2. In a machine for tapping nuts, a blankholder formed with a passage inwhich the blank is held, and having an opening in one side for theinsertion of the blanks, i-n combi- S 5 nation with a slide therein forpressing the blank to the tap, substantially as and for the purpose setforth.

3. In a machine for tapping nuts, the combination, with a box orreceptacle for holding 0 oil, of a removable blank-holder formed with alongitudinal opening in which the blank fits closely, and having anopening in one side just large enough to admit a single blank, and apressure-slide behind the blank having its forward end recessed,substantially as and for the purpose set forth. V

4. The box A,provided with a driving-shaft,

13, having a clutch, B, and tap B, and par- In testimony whereof Iaffixmy signature in tially filled with oil, in combination with the thepresence of two witnesses.

removable blank -holder 0, formed with the FREDERICK M. STEELE,

longitudinal hole 0 and side slot, 0', and the Administrator EstateLewis Wilkinson, deceased. 5 slide 0, all constructed and arranged toop- Witnesses:

erate substantially as and for the purpose set W. O. MCARTHUR,

forth. I FRANK STRATTON.

